{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08575_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Hereford, Texas | 1920 | mapsnap generated fit (2026-10-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-20"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"15"},{"label":"placed","value":"12"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 9, georef-snap 3"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"2 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p12__1 (tier 1, 34.81568,-102.39818 +/-100m); p12__3 (tier 1, 34.81600,-102.39761 +/-141m); p7__2 (tier 1, 34.81995,-102.39546 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hereford, Texas | 1920 | sanborn08575_003 p10","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T01:26:34Z","modified":"2026-10-20T01:26:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"35.6,1822.4 98.6,1822.3 91.4,1253.4 89.2,691.9 90.0,130.0 363.7,135.3 931.1,134.4 1231.9,133.5 1432.7,132.8 1470.5,686.3 1466.4,686.3 1461.6,1251.2 1491.5,1251.8 1494.0,1251.8 1521.0,1790.3 1403.2,1871.1 263.4,1841.3 113.2,1886.5 35.6,1822.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[651.0,691.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.396192,34.8182943]}},{"type":"Feature","properties":{"resourceCoords":[90.0,130.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.397878,34.8186631]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hereford, Texas | 1920 | sanborn08575_003 p11","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T01:26:34Z","modified":"2026-10-20T01:26:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"170.2,720.5 133.6,169.1 184.9,169.1 470.7,168.7 1028.4,156.8 1190.2,156.4 1189.4,41.5 1517.7,116.3 1575.1,209.9 1583.3,1764.3 1514.3,1853.3 1410.3,1810.1 932.6,1876.5 243.7,1802.8 218.3,1820.1 192.5,1283.8 190.0,1283.8 160.2,1283.1 166.1,720.5 170.2,720.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[477.0,720.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.3940526,34.8193238]}},{"type":"Feature","properties":{"resourceCoords":[477.0,1838.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.392811,34.817572]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0012__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hereford, Texas | 1920 | sanborn08575_003 p12 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.76"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2202.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4250.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-20T01:26:34Z","modified":"2026-10-20T01:26:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0012__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"653.8,1912.0 668.4,1886.8 819.3,1841.8 1302.5,1782.5 1490.7,1859.0 1580.0,1819.6 1551.2,56.9 661.7,29.0 659.8,22.6 598.0,97.0 597.6,309.4 597.4,838.8 598.9,1129.0 597.1,1406.5 599.0,1912.0 653.8,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0012__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1560.0,1126.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.39704139415687,34.81343519409573]}},{"type":"Feature","properties":{"resourceCoords":[606.5,581.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.39706270831135,34.815498449646654]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hereford, Texas | 1920 | sanborn08575_003 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.74"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T01:26:34Z","modified":"2026-10-20T01:26:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"501.2,1877.0 354.2,1877.5 338.0,1877.6 281.8,1912.0 261.2,1912.0 259.3,1881.5 70.7,1869.6 43.5,1817.7 38.3,1035.8 71.8,1009.0 77.5,661.0 35.0,366.1 53.0,313.4 13.3,194.3 56.3,55.2 112.4,28.1 530.4,13.8 1544.2,38.5 1589.3,262.3 1596.0,1833.6 1555.4,1886.6 1427.1,1873.8 1426.1,1895.9 1412.2,1874.2 673.5,1876.5 501.2,1877.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0013/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-102.40017540556397,34.82885389464935]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-102.39314061324592,34.828759349485274]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-102.39327624971477,34.82186210960067]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-102.40031104203283,34.82195665476475]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hereford, Texas | 1920 | sanborn08575_003 p2","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T01:26:34Z","modified":"2026-10-20T01:26:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"110.0,695.7 103.8,133.9 112.6,134.0 400.8,133.6 962.0,135.8 1511.0,134.0 1509.3,688.0 1510.7,1241.7 1517.0,1802.7 1237.0,1802.6 694.1,1802.9 396.5,1804.7 135.7,1803.2 122.0,1248.3 130.1,1248.3 116.1,695.7 113.2,695.7 110.0,695.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[959.0,692.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.398317,34.8172718]}},{"type":"Feature","properties":{"resourceCoords":[1511.0,134.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.397878,34.8186631]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hereford, Texas | 1920 | sanborn08575_003 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T01:26:34Z","modified":"2026-10-20T01:26:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1.0,1712.8 1.0,1760.4 381.8,1853.0 450.9,1851.5 728.2,1845.7 1006.0,1839.8 1572.1,1840.9 1571.3,1781.9 1566.8,1781.0 1543.9,1000.2 1602.7,539.0 1580.7,279.1 1493.4,178.0 1529.2,70.5 570.2,17.2 221.1,150.4 139.3,129.3 33.7,299.2 76.0,374.6 28.1,1712.1 1.0,1712.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1000.0,1848.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.4029730307315,34.819737079201616]}},{"type":"Feature","properties":{"resourceCoords":[1560.0,1848.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.40189429074776,34.82024316123071]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hereford, Texas | 1920 | sanborn08575_003 p4","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T01:26:34Z","modified":"2026-10-20T01:26:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"833.2,27.9 833.3,75.3 1216.6,168.3 1285.9,166.8 1548.0,161.2 1548.5,723.2 1557.3,723.2 1554.6,1284.6 1558.8,1284.5 1568.8,1839.6 1297.9,1845.7 739.4,1856.3 181.4,1855.8 180.5,1815.8 20.6,1785.4 55.6,1724.2 44.5,48.8 833.2,27.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[729.0,1296.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.4038589,34.8169548]}},{"type":"Feature","properties":{"resourceCoords":[729.0,179.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.4050827,34.8187152]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hereford, Texas | 1920 | sanborn08575_003 p5","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T01:26:34Z","modified":"2026-10-20T01:26:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"119.9,137.1 398.8,132.2 967.0,135.0 966.4,75.8 1123.1,107.7 1316.0,55.7 1466.1,107.8 1520.5,89.2 1527.0,691.6 1532.8,692.2 1534.1,1242.4 1541.2,1807.3 974.8,1807.5 684.0,1809.1 412.0,1809.0 127.7,1815.7 118.2,1815.8 110.2,1260.7 106.0,1260.8 110.8,699.5 102.0,699.5 103.5,137.3 119.9,137.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[960.0,694.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.4012756,34.8193799]}},{"type":"Feature","properties":{"resourceCoords":[412.0,1809.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.4010958,34.8171302]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hereford, Texas | 1920 | sanborn08575_003 p6","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T01:26:34Z","modified":"2026-10-20T01:26:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"84.7,109.8 82.8,708.8 88.6,709.5 82.1,1256.4 81.3,1818.1 632.0,1821.7 902.6,1830.0 1463.8,1835.5 1499.4,1835.8 1486.8,1272.4 1484.8,1272.5 1502.0,708.6 1468.2,707.4 1536.3,197.1 1487.5,167.2 1241.6,16.6 1216.2,1.0 1038.7,1.0 1002.2,69.2 329.1,30.1 84.7,109.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[651.0,1272.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.3984661,34.8195433]}},{"type":"Feature","properties":{"resourceCoords":[651.0,156.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.3997341,34.8212943]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0007__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hereford, Texas | 1920 | sanborn08575_003 p7 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.98"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-20T01:26:34Z","modified":"2026-10-20T01:26:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0007__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"133.9,13.5 67.2,524.1 101.0,525.2 85.3,1089.3 87.3,1089.3 101.5,1652.8 363.6,1654.2 613.2,1655.5 897.1,1656.9 1451.3,1648.8 1612.0,1649.4 1612.0,1535.5 1612.0,1535.2 1575.7,1526.7 1571.0,1025.9 1612.0,965.5 1612.0,913.3 373.9,159.6 133.9,13.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0007__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[898.0,1090.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.3953161,34.8210734]}},{"type":"Feature","properties":{"resourceCoords":[349.0,533.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.3969964,34.821439]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hereford, Texas | 1920 | sanborn08575_003 p8","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T01:26:34Z","modified":"2026-10-20T01:26:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"964.5,91.3 965.0,131.0 1517.8,136.9 1511.5,686.2 1524.4,1253.3 1517.0,1802.0 1550.6,1801.5 1571.7,1874.8 45.5,1845.8 78.5,1029.3 32.0,115.3 127.0,25.7 804.5,63.0 806.4,59.7 964.5,91.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[965.0,131.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.4042968,34.81558]}},{"type":"Feature","properties":{"resourceCoords":[1517.0,1802.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.4013542,34.8134463]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hereford, Texas | 1920 | sanborn08575_003 p9","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T01:26:34Z","modified":"2026-10-20T01:26:34Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"924.8,1816.0 670.9,1882.5 169.0,1872.4 147.8,1798.5 113.9,1798.9 121.8,1246.0 109.3,674.4 116.2,120.8 674.0,116.0 954.1,112.7 1238.0,108.0 1500.8,109.8 1505.5,675.9 1508.8,676.0 1511.8,675.9 1524.3,1232.8 1516.2,1232.8 1528.5,1792.0 1504.5,1791.8 982.1,1792.9 982.1,1849.5 924.8,1816.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034hm:g4034hm_g085751920:08575_1920-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[674.0,1792.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.4002918,34.813971]}},{"type":"Feature","properties":{"resourceCoords":[674.0,116.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-102.4021646,34.8166002]}}]}}]}